Stranger Things star Gaten Matarazzo opens up about how his cleidocranial dysplasia condition was incorporated into the character of Dustin Henderson. Cleidocranial dysplasia is a rare genetic disorder affecting bone formation that Matarazzo had since he was born. Back in season 1, long before Stranger Things season 5, Dustin is bullied by other students at his school because of his cleidocranial dysplasia, which contributes to his lisp and lack of front teeth.
